So we need to be careful not to violate the game world's reality.
The Pip-Boy is made by the Robco company, a place that we actually visited in FO3, and whose founder we met in FO:NV. Since FO4 is set only a few years after FO3, their Pip-Boy should look similar, as they do now.
But your numerous additions would make Pip-Boy look like a major upgrade.